Two groups of rabbits were continuously exposed for 2 years followed by 12 months (group 1, sacrificed after 12 months after the end of treatment) or 18 months (group 2, sacrificed 18 months after the end of treatment) of post-exposure.
the exposure room was shielded with a double tubed cell of aluminum(180 cm high x 300 cm long x 150 cm deep) which gave the room a characteristic of a resonant multimode cavity. 24 cages (38 cm high x 60 cm long x 50 cm deep) each containing a single rabbit were located in the middle of the aluminum cell. EMF was transmitted with the help of panels which were located in the room.
The continuous exposure resulted in modifications whose types and intensities were related to the time of post-exposure (12 or 18 months, respectively), The type and the extent of changes were different in different organs and -with regard to the same organs - they varied from animal to animal. A number of effects were revealed only in group 1, and not in group 2, which suggests some kind of adaptive response or of long-term recovery following continuous exposure.